Question

1. a sample of n = 9 scores has \\( \sigma x = 108 \\). what is the sample mean?

Explanation:

Step1: Recall the formula for sample mean

The formula for the sample mean \( M \) is \( M=\frac{\sum X}{n} \), where \( \sum X \) is the sum of the scores and \( n \) is the number of scores.

Step2: Substitute the given values

We are given that \( n = 9 \) and \( \sum X=108 \). Substituting these values into the formula, we get \( M=\frac{108}{9} \).

Step3: Calculate the result

Dividing 108 by 9, we have \( \frac{108}{9} = 12 \).

Answer:

The sample mean is \( \boldsymbol{12} \).